Home / Historical data / All tickers / COST
COST historical data download
Costco Wholesale Corp · Nasdaq · listed 1982-03-02 · Common stock · 1-minute to daily · split & dividend adjusted · CSV
Download options
Full history (2003-09-10 to today), 23.18 ticker-years. "Select" opens the download page with these settings, where you can still change the date range, adjustment and time zone.
| Bar size | Rows | Size (zip) | Full history | |
|---|---|---|---|---|
| 1 min | ~3.6M | ~71 MB | $23 | Select |
| 5 min | ~649K | ~13 MB | $12 | Select |
| 15 min | ~216K | ~4 MB | $12 | Select |
| 1 hour | ~57K | ~1 MB | $8 | Select |
| DailyFree | 5,833 | 98 KB | Free | Download free |
Data preview
Real rows from the most recent trading day, adjusted, in US Eastern time: exactly what the download contains.
| datetime_et | open | high | low | close | volume | vwap | trades | |
|---|---|---|---|---|---|---|---|---|
| 2026-11-13 05:11:00 | Pre | 1092.22 | 1092.22 | 1092.22 | 1092.22 | 191 | 1092.22 | 1 |
| 2026-11-13 05:26:00 | Pre | 1092.22 | 1092.69 | 1092.22 | 1092.22 | 300 | 1092.3005 | 12 |
| 2026-11-13 05:29:00 | Pre | 1093.72 | 1093.72 | 1093.72 | 1093.72 | 62 | 1093.765 | 4 |
| ⋯ | ||||||||
| 2026-11-13 09:30:00 | Regular | 1094.59 | 1097.92 | 1092.64 | 1095.21 | 37,220 | 1096.9123 | 1520 |
| 2026-11-13 09:31:00 | Regular | 1094.03 | 1097.94 | 1094.01 | 1096.055 | 8,989 | 1096.5755 | 439 |
| 2026-11-13 09:32:00 | Regular | 1097.89 | 1098.5 | 1096.8 | 1097.655 | 9,158 | 1097.6719 | 479 |
| ⋯ | ||||||||
| 2026-11-13 18:49:00 | After | 1106.5 | 1106.5 | 1106.5 | 1106.5 | 100 | 1106.4998 | 2 |
| 2026-11-13 19:04:00 | After | 1106.49 | 1106.49 | 1106.49 | 1106.49 | 100 | 1106.4899 | 2 |
| 2026-11-13 19:55:00 | After | 1105.8 | 1105.8 | 1105.8 | 1105.8 | 101 | 1105.8039 | 3 |
Splits, dividends and ticker changes
The adjusted data already accounts for every event below, so there is nothing left for you to fix.
Splits 0
No splits or reverse splits in the data period (2003-09-10 to today).
Dividends 96
| Ex-date | Per share (USD) |
|---|---|
| 2026-10-30 | 1.47 |
| 2026-07-24 | 1.47 |
| 2026-05-01 | 1.47 |
| 2026-01-30 | 1.3 |
| 2025-10-31 | 1.3 |
| 2025-08-01 | 1.3 |
Ticker changes 0
Traded as COST throughout the data period, so there is nothing to stitch.
Year by year
Computed from adjusted daily bars. The table also lists estimated 1-minute rows per year, to help size a download.
COST data FAQ
How are COST dividends adjusted?
COST paid 96 cash dividends in the data period, most recently $1.47 per share with an ex-date of 2026-10-30. Each dividend gives a factor of 1 − dividend ÷ prior close, and every price before the ex-date is multiplied by it. Many sources only adjust for splits, which leaves a fake drop on every ex-dividend date in your returns.
Why does the data start on 2003-09-10 and not the listing date?
COST listed on 1982-03-02, but our minute-level history begins on 2003-09-10. Earlier data isn't available.
Do you have overnight (20:00–4:00 ET) data?
Not yet. The data comes from the consolidated tape (SIP), which covers 4:00–20:00 ET. US exchanges plan to add overnight trading to the SIP from 2026-12-06, and we will follow.
Can I keep the download up to date with the API?
Yes. Downloads and the market data API share the same data and the same adjustment. Download the history once, then pull each new day from the /v2/aggs endpoint.